Underwater cable sealing structure

Abstract

The utility model relates to the technical field of wire and cable testing, in particular to an underwater cable sealing structure, which comprises a cable body and a sealing connection assembly, and is characterized in that the cable body is used for conducting connection with an underwater robot and comprises a cable inner core, a cable fixing layer, a shielding fixing layer and an outer coating layer; the cable inner core is arranged in the cable fixing layer, the shielding fixing layer is arranged outside the shielding fixing layer, and the outer coating layer wraps the shielding fixing layer through extrusion molding; one end of the cable fixing layer extends out of the outer coating layer, one end of the cable inner core extends out of the cable fixing layer, a protective sleeve is arranged outside the outer coating layer, and the protective sleeve is movably arranged outside the outer coating layer; according to the utility model, through the innovative design of the cable body and the sealing connection assembly, efficient protection and reliable and stable connection effects of conductive connection of the underwater robot are realized, and the cable has wide application prospect and market potential.

Description

Technical Field

[0001] The utility model relates to the technical field of wire and cable testing, in particular to an underwater cable sealing structure. Background Art

[0002] As essential infrastructure for power and information transmission, wires and cables play a vital role in modern society. With the continuous advancement of science and technology, the manufacturing technologies and materials used for wires and cables continue to innovate. The application of new conductor, insulation, and shielding materials, as well as improvements in production processes, have enabled wires and cables to achieve higher transmission efficiency, improved anti-interference performance, and longer service lives. With the development of the global economy and the acceleration of urbanization, the demand for wires and cables continues to increase. Emerging sectors, such as new energy, electric vehicles, and 5G communications, are placing higher demands on wires and cables, driving the development of the wire and cable industry.

[0003] Underwater cables are generally used for underwater power and signal transmission. When used underwater, the sealing structure of the connection is particularly important. Because the movement of underwater mobile equipment causes the cable to move, this can affect the connection position. Currently, multi-layer sealing rings are used for sealing. However, these rings can deform and damage over time, compromising stable connections and protecting the electrical connection points. Therefore, improvements are needed to existing underwater cable sealing connection structures. Utility Model Content

[0004] To solve the above problems, the utility model realizes efficient protection of the conductive connection of the underwater robot and reliable and stable connection effect through the innovative design of the cable body and the sealing connection component. It is an underwater cable sealing structure with broad application prospects and market potential.

[0005] The technical solution adopted by the utility model is: an underwater cable sealing structure, including a cable body and a sealing connection assembly, the cable body is used for conductive connection of an underwater robot, the cable body includes a cable inner core, a cable fixing layer, a shielding fixing layer and an outer sheath, the cable inner core is arranged in the cable fixing layer, the shielding fixing layer is arranged outside the shielding fixing layer, and the outer sheath is coated on the outside of the shielding fixing layer by extrusion; one end of the cable fixing layer extends outside the outer sheath, one end of the cable inner core extends outside the cable fixing layer, a protective sleeve is arranged on the outside of the outer sheath, and the protective sleeve is movably arranged on the outside of the outer sheath;

[0006] The sealing connection assembly includes a connection shell, a flexible connection piece, an injection molded connection piece and a conductive connection piece. The connection shell is provided with a connection platform and a wiring part. The flexible connection piece is arranged on the wiring part. A fixed installation groove is provided on the connection platform. An elastic pressure block is provided on the fixed installation groove. The conductive connection piece is provided with an axial movable groove. The conductive connection piece is movably arranged on the fixed installation groove through the axial movable groove. The elastic pressure block is used to press the conductive connection piece on the fixed installation groove; the conductive connection piece is electrically connected to the inner core of the cable; the injection molded connection piece is injection-molded to extend the conductive connection piece, the inner core of the cable and the cable fixed layer out of the outer layer. The injection molded connection piece is formed by injection molding of silicone or silicone rubber, and the protective sleeve is used to be sleeved on the outside of the injection molded connection piece.

[0007] A further improvement to the above solution is that the cable fixing layer is extruded and coated on the outside of the cable inner core, and the cable fixing layer is provided with an extrusion cavity on the periphery of the cable inner core. There are multiple extrusion cavities, which are evenly distributed in an annular direction on the periphery of the cable inner core.

[0008] A further improvement to the above solution is that the cable inner core is formed by twisting multiple copper wires together, and one end of the cable inner core extending out of the cable fixing layer is welded to the conductive connector.

[0009] A further improvement to the above scheme is that a flexible connection layer is provided between the cable fixing layer and the shielding fixing layer, and the flexible connection layer is extruded by silicone and covered on the outside of the cable fixing layer. A plurality of weight-reducing holes are provided on the flexible connection layer, and the plurality of weight-reducing holes are evenly distributed in a circumferential direction on the flexible connection layer.

[0010] A further improvement to the above solution is that the shielding fixing layer is formed by winding multiple copper metal wires in a mesh shape on the outside of the cable fixing layer, and the outer layer is extruded and coated on the shielding fixing layer, and a gap is formed between the outer layer and the shielding fixing layer.

[0011] A further improvement to the above solution is that the flexible connector and the conductive connector are woven into one piece by copper wire, and the conductive connector is formed into a structural member by thermal welding.

[0012] A further improvement to the above solution is that a reinforcement ring is provided on the side of the connecting platform facing the wiring part and an injection-molded connecting groove is provided on the side facing the cable body. The reinforcement ring is located outside the fixed installation groove, and the injection-molded connector fills the injection-molded connecting groove by injection molding.

[0013] A further improvement to the above solution is that the wiring portion is provided with a wiring cavity, and the flexible connector extends toward the wiring cavity.

[0014] A further improvement to the above solution is that a protective fixing groove is provided on the outside of the injection molded connector, and a protective fixing sheet is provided on the inner periphery of the protective sleeve, and the protective fixing sheet is used to cooperate with the protective fixing groove so that the protective sleeve is provided on the outside of the injection molded connector.

[0015] The beneficial effects of the utility model are:

[0016] Compared to existing cable sealing structures, this new cable seal effectively protects the conductive connections of underwater robots through the design of a cable body comprising a cable core, a cable retaining layer, a shield retaining layer, and an outer sheath. The internal structural design of the cable effectively secures the cable core, while the external shield retaining layer and outer sheath provide reliable protection and insulation. Furthermore, the extruded coating of the outer sheath enhances overall wear and corrosion resistance, making it suitable for the complex conditions of underwater environments.

[0017] The connection shell of the sealing connection assembly is provided with a connection platform and a wiring part, and the arrangement of the flexible connector, the injection molded connector and the conductive connector constitutes a complete sealing connection system. In particular, the conductive connector is movably arranged on the fixed installation slot through an axial movable groove, and is pressed by an elastic pressure block, which can ensure the firmness and stability of the connection, thereby providing a reliable conductive connection effect. The design of the injection molded connector is formed by injection molding of silicone or silicone rubber, which provides excellent sealing performance and corrosion resistance for the connection components, so that the entire connection system can operate stably for a long time in an underwater environment without being damaged. At the same time, the movable arrangement of the protective sleeve on the outside of the outer layer further improves the protection and flexibility of the overall connection system, and can adapt to usage scenarios of different forms and postures. The design of the utility model fully takes into account the special requirements of the underwater environment. Through the innovative design of the cable body and the sealing connection assembly, efficient protection of the conductive connection of the underwater robot and a reliable and stable connection effect are achieved, which has broad application prospects and market potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional schematic diagram of the underwater cable sealing structure of the utility model;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the underwater cable sealing structure from another perspective;

[0020] Figure 3 for Figure 1 A schematic diagram of the main view of the cable body of the underwater cable sealing structure;

[0021] Figure 4 for Figure 1 Structural diagram of the underwater cable sealing structure;

[0022] Figure 5 for Figure 4 Cross-sectional view of AA in the figure.

[0023] Description of reference numerals: cable body 10, cable inner core 1, cable fixing layer 2, extrusion cavity 21, flexible connection layer 22, weight reduction hole 221, shielding fixing layer 3, outer layer 4, protective sleeve 41, protective fixing sheet 411;

[0024] Sealing connection assembly 20, connecting shell 5, connecting platform 51, fixed mounting groove 511, elastic pressure block 512, reinforcement ring 513, injection molding connection groove 514, wiring part 52, wiring cavity 521, flexible connector 6, injection molding connector 7, protective fixing groove 71, conductive connector 8, axial movable groove 81. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0026] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are only for the purpose of describing specific embodiments and are not intended to limit this invention. Figures 1 to 5As shown, one embodiment of the present invention relates to an underwater cable sealing structure, including a cable body 10 and a sealing connection assembly 20. The cable body 10 is used for conductive connection of an underwater robot. The cable body 10 includes a cable core 1, a cable fixing layer 2, a shielding fixing layer 3, and an outer layer 4. The cable core 1 is arranged within the cable fixing layer 2, the shielding fixing layer 3 is arranged outside the shielding fixing layer 3, and the outer layer 4 is extruded and coated on the outside of the shielding fixing layer 3. One end of the cable fixing layer 2 extends outside the outer layer 4, and one end of the cable core 1 extends outside the cable fixing layer 2. A protective sleeve 41 is provided on the outside of the outer layer 4, and the protective sleeve 41 is movably provided on the outside of the outer layer 4. This embodiment achieves efficient protection for the conductive connection of the underwater robot by configuring the cable body including the cable core 1, the cable fixing layer 2, the shielding fixing layer 3, and the outer layer 4. The internal structural design of the cable can effectively fix the cable core 1, and the shielding fixing layer 3 and the outer layer 4 are provided on the outside, providing reliable protection and insulation performance. At the same time, the extruded coating design of the outer layer 4 enhances the overall wear resistance and corrosion resistance, and is suitable for the complex conditions of the underwater environment.

[0028] The sealing connection assembly 20 includes a connection shell 5, a flexible connection member 6, an injection molded connection member 7 and a conductive connection member 8. The connection shell 5 is provided with a connection platform 51 and a wiring part 52. The flexible connection member 6 is arranged on the wiring part 52. The connection platform 51 is provided with a fixed installation groove 511. The fixed installation groove 511 is provided with an elastic pressure block 512. The conductive connection member 8 is provided with an axial movable groove 81. The conductive connection member 8 is movably set on the fixed installation groove 511 through the axial movable groove 81. The elastic pressure block 512 is used to press the conductive connection member 8 on the fixed installation groove 511; the conductive connection member 8 is electrically connected to the cable core 1; the injection molded connection member 7 is injection molded to extend the conductive connection member 8, the cable core 1 and the cable fixed layer 2 out of the outer layer 4. The injection molded connection member 7 is formed by injection molding of silicone or silicone rubber, and the protective cover 41 is used to be sleeved on the outside of the injection molded connection member 7. In this embodiment, the connection shell 5 of the sealing connection assembly 20 is provided with a connection platform 51 and a wiring portion 52, and the arrangement of the flexible connector 6, the injection molded connector 7 and the conductive connector 8 constitutes a complete sealing connection system. In particular, the conductive connector 8 is movably arranged on the fixed installation groove 511 through the axial movable groove 81, and is pressed by the elastic pressure block 512, which can ensure the firmness and stability of the connection, thereby providing a reliable conductive connection effect. The design of the injection molded connector 7 is formed by injection molding of silicone or silicone rubber, which provides excellent sealing performance and corrosion resistance for the connection components, so that the entire connection system can operate stably for a long time in an underwater environment without being damaged. At the same time, the protective sleeve 41 is movably arranged on the outside of the outer layer 4, which further improves the protection and flexibility of the overall connection system and can adapt to usage scenarios of different forms and postures. The design of the utility model fully takes into account the special requirements of the underwater environment. Through the innovative design of the cable body and the sealing connection assembly 20, efficient protection of the conductive connection of the underwater robot and a reliable and stable connection effect are achieved, which has broad application prospects and market potential. The combination of the flexible connector 6, the conductive connector 8 and the injection molded connector 7 makes the connection structure completely sealed and has a certain buffering floating force.

[0029] The cable core 1 is formed by twisting multiple strands of copper wire together, and one end of the cable core 1 extending out of the cable fixing layer 2 is welded to the conductive connector 8. In this embodiment, the cable core 1 formed by twisting multiple strands of copper wire together has high conductivity and flexibility, and can provide a stable and reliable conductive connection in a complex environment. Secondly, the end of the cable core 1 extending out of the cable fixing layer 2 is welded to the conductive connector 8. This welding method can ensure the firmness and stability of the connection, thereby achieving a high-quality conductive connection effect. Such a design can effectively ensure the transmission quality and stability of the signal, and is suitable for scenarios with high requirements for conductive connections in special environments such as underwater robots.

[0030] The cable fixing layer 2 is coated on the outside of the cable core 1 by extrusion. The cable fixing layer 2 is provided with an extrusion cavity 21 on the periphery of the cable core 1. There are multiple extrusion cavities 21, which are evenly distributed in a circumferential direction on the periphery of the cable core 1. Specifically, a flexible connection layer 22 is provided between the cable fixing layer 2 and the shielding fixing layer 3. The flexible connection layer 22 is extruded and coated on the outside of the cable fixing layer 2 by silicone. The flexible connection layer 22 is provided with multiple weight-reducing holes 221. The multiple weight-reducing holes 221 are evenly distributed in a circumferential direction on the flexible connection layer 22. In this embodiment, the cable fixing layer 2 is coated on the outside of the cable core 1 by extrusion, and an extrusion cavity 21 is provided on the periphery of the cable core 1. This design effectively ensures the firm fixation of the cable core 1 and the overall structural stability of the conductor. The provision of the extrusion cavity 21 enables the cable fixing layer 2 to be evenly coated on the outside of the cable core 1, thereby providing good mechanical support and protection. A flexible connection layer 22 is provided between the cable-fixing layer 2 and the shield-fixing layer 3. This flexible connection layer 22 is extruded from silicone and coated around the exterior of the cable-fixing layer 2. It is also provided with multiple weight-reducing holes 221. This design imparts flexibility and elasticity to the entire connection structure, effectively reducing the overall weight of the cable and lowering stress concentration, thereby enhancing its durability and fatigue resistance. Furthermore, the weight-reducing holes 221 reduce the cable's weight and enhance its buoyancy during underwater use.

[0031] The shielding fixing layer 3 is formed by a plurality of copper metal wires wound in a mesh shape on the outside of the cable fixing layer 2, and the outer layer 4 is coated on the shielding fixing layer 3 by extrusion, and a gap is formed between the outer layer 4 and the shielding fixing layer 3. In this embodiment, the shielding fixing layer 3 is formed by a plurality of copper metal wires wound in a mesh shape, which effectively improves the anti-interference ability and electromagnetic shielding performance of the cable. This shielding structure can effectively reduce the impact of external electromagnetic interference on the cable transmission signal, ensuring the stable transmission of the signal and the reliability of the data. The outer layer 4 is coated on the shielding fixing layer 3 by extrusion, forming a gap. This design not only enhances the wear resistance and corrosion resistance of the cable, but also effectively prevents moisture and debris from penetrating into the interior of the cable, thereby improving the service life and stability of the cable.

[0032] The flexible connector 6 and the conductive connector 8 are formed into one piece by weaving copper wires, and the conductive connector 8 is formed into a structural member by heat welding. In this embodiment, the flexible connector 6 and the conductive connector 8 formed into one piece by weaving copper wires can provide good flexibility and bending performance, so that the connector can adapt to complex usage environments and maintain stable conductive functions. This design can effectively reduce stress concentration in the connection part and improve the durability and fatigue resistance of the overall connection. The conductive connector 8 is formed into a structural member by heat welding, which ensures the firmness and stability of the connection. Heat welding can form a reliable metal bond at the connection part, so that the connector has good conductivity and mechanical strength, providing a reliable electrical connection for the entire connection system.

[0033] The connecting platform 51 is provided with a reinforcement ring 513 on the side facing the wiring portion 52, and an injection-molded connection groove 514 on the side facing the cable body 10. The reinforcement ring 513 is located on the outside of the fixed installation groove 511, and the injection-molded connection groove 514 is filled by injection molding. Specifically, the wiring portion 52 is provided with a wiring cavity 521, and the flexible connector 6 extends toward the wiring cavity 521. In this embodiment, the connecting platform 51 is provided with a reinforcement ring 513 on the side facing the wiring portion 52, and an injection-molded connection groove 514 is provided on the side facing the cable body 10. The provision of the reinforcement ring 513 can enhance the structural stability and load-bearing capacity of the connecting platform 51, while the injection-molded connection groove 514 provides additional protection for the connection, and filling the injection-molded connection groove 514 by injection molding can effectively fix the connecting component and enhance its durability and reliability. The wiring portion 52 is provided with a wiring cavity 521, and the flexible connector 6 extends toward the wiring cavity 521. This design can ensure a firm connection between the connecting portion and the wiring portion 52, and the extension of the flexible connector 6 makes the connection more flexible and reliable. These features together ensure the firmness and stability of the connection, thereby improving the reliability and durability of the entire connection system.

[0034] The outside of the injection molded connector 7 is provided with a protective fixing groove 71, and the inner circumference of the protective sleeve 41 is provided with a protective fixing piece 411, and the protective fixing piece 411 is used to cooperate with the protective fixing groove 71 so that the protective sleeve 41 is sleeved on the outside of the injection molded connector 7. In this embodiment, the provision of the protective fixing groove 71 and the protective fixing piece 411 provides effective protection and fixing functions for the injection molded connector 7. By cooperating with the protective fixing groove 71 and the protective fixing piece 411, the protective sleeve 41 can be firmly sleeved on the outside of the injection molded connector 7, thereby effectively protecting the connecting component from erosion and damage by the external environment, thereby improving the service life and reliability of the connecting component. This design scheme also enhances the stability and safety of the connecting component. The provision of the protective sleeve 41 can not only reduce the direct impact of external objects on the connecting component, but also effectively prevent impurities such as dust and moisture from entering the interior of the connecting component, thereby improving the stability and reliability of the connecting component.

[0035] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An underwater cable sealing structure, characterized in that: The invention comprises a cable body and a sealing connection assembly. The cable body is used for conductive connection of an underwater robot. The cable body comprises a cable inner core, a cable fixing layer, a shielding fixing layer and an outer layer. The cable inner core is arranged in the cable fixing layer, the shielding fixing layer is arranged outside the shielding fixing layer, and the outer layer is coated on the outside of the shielding fixing layer by extrusion. One end of the cable fixing layer extends out of the outer layer, and one end of the cable inner core extends out of the cable fixing layer. A protective sleeve is provided on the outside of the outer layer, and the protective sleeve is movably provided on the outside of the outer layer. The sealing connection assembly includes a connection shell, a flexible connection piece, an injection molded connection piece and a conductive connection piece. The connection shell is provided with a connection platform and a wiring part. The flexible connection piece is arranged on the wiring part. A fixed installation groove is provided on the connection platform. An elastic pressure block is provided on the fixed installation groove. The conductive connection piece is provided with an axial movable groove. The conductive connection piece is movably arranged on the fixed installation groove through the axial movable groove. The elastic pressure block is used to press the conductive connection piece on the fixed installation groove; the conductive connection piece is electrically connected to the inner core of the cable; the injection molded connection piece is injection-molded to extend the conductive connection piece, the inner core of the cable and the cable fixing layer out of the outer layer. The injection molded connection piece is formed by injection molding of silicone or silicone rubber, and the protective sleeve is used to be sleeved on the outside of the injection molded connection piece; a flexible connection layer is provided between the cable fixing layer and the shielding fixing layer, and the flexible connection layer is extruded and coated on the outside of the cable fixing layer by silicone.

2. The underwater cable sealing structure according to claim 1, characterized in that: The cable fixing layer is coated on the outside of the cable inner core by extrusion molding. The cable fixing layer is provided with an extrusion cavity on the periphery of the cable inner core. There are multiple extrusion cavities, which are evenly distributed on the periphery of the cable inner core in an annular direction.

3. The underwater cable sealing structure according to claim 2, characterized in that: The cable inner core is formed by twisting a plurality of copper wires together, and one end of the cable inner core extending out of the cable fixing layer is welded to the conductive connector.

4. The underwater cable sealing structure according to claim 1, characterized in that: The flexible connection layer is provided with a plurality of weight-reducing holes, and the plurality of weight-reducing holes are uniformly distributed in a circumferential direction on the flexible connection layer.

5. The underwater cable sealing structure according to claim 1, characterized in that: The shielding fixing layer is formed by winding a plurality of copper metal wires in a mesh shape on the outside of the cable fixing layer. The outer layer is covered on the shielding fixing layer by extrusion, and a gap is formed between the outer layer and the shielding fixing layer.

6. The underwater cable sealing structure according to claim 1, characterized in that: The flexible connector and the conductive connector are woven into one body by copper wire, and the conductive connector is formed into a structural member by thermal welding.

7. The underwater cable sealing structure according to claim 1, characterized in that: The connection platform is provided with a reinforcement ring on the side facing the wiring part and an injection molding connection groove on the side facing the cable body. The reinforcement ring is located outside the fixed installation groove, and the injection molding connector fills the injection molding connection groove by injection molding.

8. The underwater cable sealing structure according to claim 1, characterized in that: The wiring portion is provided with a wiring cavity, and the flexible connector extends toward the wiring cavity.

9. The underwater cable sealing structure according to claim 1, characterized in that: The outside of the injection molded connector is provided with a protective fixing groove, and the inner periphery of the protective sleeve is provided with a protective fixing piece, and the protective fixing piece is used to cooperate with the protective fixing groove so that the protective sleeve is sleeved on the outside of the injection molded connector.

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